Finding the Third Proportional to 57,465 and 86,266.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,465 : 86,266.50 = 86,266.50 : x
2. Step 2: Convert to fraction form
   57,465/86,266.50 = 86,266.50/x
3. Step 3: Cross multiply
   57,465x = 86,266.50 × 86,266.50
4. Step 4: Simplify right side
   57,465x = 7,441,909,022.25
5. Step 5: Solve for x
   x = 7,441,909,022.25/57,465
6. Step 6: Final answer
   x = 129,503.33